21243480

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{211}}^1\times {\mathrm{839}}^1$

素因数の和:1064

約数の個数: 64

約数和(自身を含む): 64108800

約数和(自身を除く): 42865320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 211, 422, 633, 839, 844, 1055, 1266, 1678, 1688, 2110, 2517, 2532, 3165, 3356, 4195, 4220, 5034, 5064, 6330, 6712, 8390, 8440, 10068, 12585, 12660, 16780, 20136, 25170, 25320, 33560, 50340, 100680, 177029, 354058, 531087, 708116, 885145, 1062174, 1416232, 1770290, 2124348, 2655435, 3540580, 4248696, 5310870, 7081160, 10621740, 21243480]

約数ペア:

[(1, 21243480), (2, 10621740), (3, 7081160), (4, 5310870), (5, 4248696), (6, 3540580), (8, 2655435), (10, 2124348), (12, 1770290), (15, 1416232), (20, 1062174), (24, 885145), (30, 708116), (40, 531087), (60, 354058), (120, 177029), (211, 100680), (422, 50340), (633, 33560), (839, 25320), (844, 25170), (1055, 20136), (1266, 16780), (1678, 12660), (1688, 12585), (2110, 10068), (2517, 8440), (2532, 8390), (3165, 6712), (3356, 6330), (4195, 5064), (4220, 5034)]